From: Johannes Berg <johannes.berg@xxxxxxxxx>
Sometimes drivers already looked up, or know out-of-band
from their device, which station transmitted a given RX
frame. Allow them to pass the station pointer to mac80211
to save the extra lookup.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
drivers/net/wireless/intel/iwlwifi/dvm/rx.c | 2 +-
drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c | 2 +-
drivers/net/wireless/intel/iwlwifi/mvm/rx.c | 2 +-
drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c | 2 +-
include/net/mac80211.h | 7 ++++---
net/mac80211/rx.c | 18 +++++++++++++-----
6 files changed, 21 insertions(+), 12 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/dvm/rx.c b/drivers/net/wireless/intel/iwlwifi/dvm/rx.c
index 52ab1e0..27ea61e 100644
--- a/drivers/net/wireless/intel/iwlwifi/dvm/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/dvm/rx.c
@@ -686,7 +686,7 @@ static void iwlagn_pass_packet_to_mac80211(struct iwl_priv *priv,
memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
- ieee80211_rx_napi(priv->hw, skb, priv->napi);
+ ieee80211_rx_napi(priv->hw, NULL, skb, priv->napi);
}
static u32 iwlagn_translate_rx_status(struct iwl_priv *priv, u32 decrypt_in)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
index 535134d..4918d5e 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
@@ -1497,5 +1497,5 @@ void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
/* pass it as regular rx to mac80211 */
- ieee80211_rx_napi(mvm->hw, skb, NULL);
+ ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
}
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
index 145ec68..29dbfaf 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
@@ -130,7 +130,7 @@ static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
fraglen, rxb->truesize);
}
- ieee80211_rx_napi(mvm->hw, skb, napi);
+ ieee80211_rx_napi(mvm->hw, NULL, skb, napi);
}
/*
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
index 615dea1..00d90e9 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
@@ -194,7 +194,7 @@ static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
if (iwl_mvm_check_pn(mvm, skb, queue, sta))
kfree_skb(skb);
else
- ieee80211_rx_napi(mvm->hw, skb, napi);
+ ieee80211_rx_napi(mvm->hw, NULL, skb, napi);
}
static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 6e34675..fd5ec44 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -3855,11 +3855,12 @@ void ieee80211_restart_hw(struct ieee80211_hw *hw);
* This function must be called with BHs disabled.
*
* @hw: the hardware this frame came in on
+ * @sta: the station the frame was received from, or %NULL
* @skb: the buffer to receive, owned by mac80211 after this call
* @napi: the NAPI context
*/
-void ieee80211_rx_napi(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct napi_struct *napi);
+void ieee80211_rx_napi(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
+ struct sk_buff *skb, struct napi_struct *napi);
/**
* ieee80211_rx - receive frame
@@ -3883,7 +3884,7 @@ void ieee80211_rx_napi(struct ieee80211_hw *hw, struct sk_buff *skb,
*/
static inline void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb)
{
- ieee80211_rx_napi(hw, skb, NULL);
+ ieee80211_rx_napi(hw, NULL, skb, NULL);
}
/**
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 57a0ccd..6c3829d 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -3533,6 +3533,7 @@ static bool ieee80211_prepare_and_rx_handle(struct ieee80211_rx_data *rx,
* be called with rcu_read_lock protection.
*/
static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
+ struct ieee80211_sta *pubsta,
struct sk_buff *skb,
struct napi_struct *napi)
{
@@ -3542,7 +3543,6 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
__le16 fc;
struct ieee80211_rx_data rx;
struct ieee80211_sub_if_data *prev;
- struct sta_info *sta, *prev_sta;
struct rhash_head *tmp;
int err = 0;
@@ -3578,7 +3578,14 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
ieee80211_is_beacon(hdr->frame_control)))
ieee80211_scan_rx(local, skb);
- if (ieee80211_is_data(fc)) {
+ if (pubsta) {
+ rx.sta = container_of(pubsta, struct sta_info, sta);
+ rx.sdata = rx.sta->sdata;
+ if (ieee80211_prepare_and_rx_handle(&rx, skb, true))
+ return;
+ goto out;
+ } else if (ieee80211_is_data(fc)) {
+ struct sta_info *sta, *prev_sta;
const struct bucket_table *tbl;
prev_sta = NULL;
@@ -3652,8 +3659,8 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
* This is the receive path handler. It is called by a low level driver when an
* 802.11 MPDU is received from the hardware.
*/
-void ieee80211_rx_napi(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct napi_struct *napi)
+void ieee80211_rx_napi(struct ieee80211_hw *hw, struct ieee80211_sta *pubsta,
+ struct sk_buff *skb, struct napi_struct *napi)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_rate *rate = NULL;
@@ -3752,7 +3759,8 @@ void ieee80211_rx_napi(struct ieee80211_hw *hw, struct sk_buff *skb,
ieee80211_tpt_led_trig_rx(local,
((struct ieee80211_hdr *)skb->data)->frame_control,
skb->len);
- __ieee80211_rx_handle_packet(hw, skb, napi);
+
+ __ieee80211_rx_handle_packet(hw, pubsta, skb, napi);
rcu_read_unlock();
--
2.5.0
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